 Its main focus has been the acidification of the ocean, which threatens marine life, especially shellfish and coral that are necessary to many marine ecosystems, and, consequently, sources of seafood.They also focus on promoting offshore wind farms and combating the use of offshore drilling and seismic airgun blasting.Oceana launches expeditions to gather scientific data, which is used by Oceana, other nonprofit groups, local communities, and governmental agencies to create or influence policy.